通过调用Thread类的start()方法来启动一个线程,这时此线程处于就绪(可运行)状态,并没有运行,一旦得到cpu时间片,就开始执行run()方法,这里方法 run()称为线程体,它包含了要执行的这个线程的内容,run方法运行结束,此线程随即终止。 run()方法只是类的一个普通方法而已,如果直接调用Run方法,程序中依然只有主线程这一...
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fromthreadingimportThread#方式一:(引用系统中thread类)deftask(name):print('%s is running')print('%s is done')if__name__=='__main__': p=Thread(target=task,args=('子线程',)) p.start()#方式二:(自定义类)classMythread(Thread):defrun(self):print('%s is running'%self.name)print('%s...
start() time.sleep(0.8) if __name__ == "__main__": print("--->主函数开始运行<---") main() print("--->主函数运行完毕<---") 线程多任务实现2:定义类继承threading.Thread,然后重写run方法(run方法相当于功能函数) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 from threading import...
t1.start()#启动线程 t2.start()#启动另一个线程print(t1.getName())#获取线程名print(t2.getName())run("t1")run("t2")#继承式调用classMyThread(threading.Thread):def__init__(self,num,sleep_time):super(MyThread,self).__init__()self.num=num ...
start() order2.start() # 确保所有线程都完成工作 order1.join() order2.join() 2.1.3 线程同步机制:锁、条件变量、信号量等 为了防止咖啡厅里的原料被同时取用造成混乱,我们需要引入同步机制。就好比给咖啡豆罐子加一把锁,只有拿到钥匙的服务员才能取用豆子: import threading coffee_lock = threading.Lock...
For versions before 3.12, VizTracer supports python nativethreadingmodule. Just startVizTracerbefore you create threads and it will just work. For other multi-thread scenarios, you can useenable_thread_tracing()to notice VizTracer about the thread to trace it. ...
(f"start: {time.strftime('%X')}")awaitstudy_asyncio("First task run")awaitstudy_asyncio("Second task run")print(f"Finished: {time.strftime('%X')}")asyncio.run(main())>>>start:20:25:25Before:sayFirsttaskrunAfter:sayFirsttaskrunBefore:saySecondtaskrunAfter:saySecondtaskrunFinished:20:25...
Local computer: switch to theRun and Debugview (⇧⌘D(Windows, LinuxCtrl+Shift+D)) in VS Code, select thePython Debugger: Attachconfiguration Local computer: set a breakpoint in the code where you want to start debugging. Local computer: start the VS Code debugger using the modifiedPython...
extensions import LockedMachine from threading import Thread import time states = ['A', 'B', 'C'] machine = LockedMachine(states=states, initial='A') # let us assume that entering B will take some time thread = Thread(target=machine.to_B) thread.start() time.sleep(0.01) # thread ...